Notice - Notice contains
information on a notification element.
NoticesMonitor -
NoticesMonitor allows to receive in real time events from snapd, like status changes in an ongoing refresh, inhibited refreshes
due to the snap being active, or inhibited launches due to an ongoing refresh.
Plug - Plug contains information
about a Snap plug.
PlugRef - PlugRef contains the
state of Snap a interface plug_ref.